Motor.



T. W. KINGS.

MOTOR. APPLIOATION FILED Nov. 27, 1912.

1,119,758, Patented Dea-1,1914

m Il ""Mlullmlll THE MORRIS PETERS CO.. FHoa-lrHo.. WASHINGTON, DA C.

UMTED STAWT orion.

THOMAS W. KINGS, or CHICAGO, ILLINOIS, ASsIGNoR To Ian n. BURTIS, or CHICAGO, ILLINOIS.

MOTOR.

Specification of Letters Patent.

Patented Dec. 1, 1914.

Application led November 27, 1912. Serial ITo. 733,858.

T 0 all whom t may concern Be it known that I, Tiroirs* W. KINGS, a subject of the King of Great Britain, residing in Chicago, county of Cook, and State of Illinois, have invented certain new and useful improvements in Motors, of which the following is a specification.-

The present invention relates to motors generally and more particularly tov motors in which a fluid, such as compressed air, is used to reciprocate one or more pistons.

The principal object of the invention is to provide a motor which shall be simple in construction and efficient in operation.

An important feature of my invention consists in a novel control valve by which the fluid is controlled in its passage to the pistons. This valve consists of a simple reed rigidly secured at one point and operating between opposed ports at another point, the reed lying normally out of contact with said ports.

Another important feature of my invention consists in a novel arrangement of pistons by which the motor is enabled to start in any position of its movable parts.

Other features of invention reside in the arrangement and details of the parts.

These several features will be best understood upon reference to the following detailed description taken in connection with the accompanying drawing, and the scope of the invention will be particularly pointed out in the appended claims.

In the drawing, Figure 1, is a transverse vertical section of a motor constructed in accordance with my invention, the plane of section being indicated by the line 1 1 of Fig. 2; Fig. 2 is a Vertical elevation of onehalf of the motor, a portion being shown in section taken on plane indicated by the line 2--2 of Fig. 1; Fig. 3 is a transverse section of the motor taken on a vplane indicated by the line 3 3 of Figs. 1 and 2; and Fig. 4 is a longitudinal section of a modified piston arrangement.

Throughout thesev views like characters refer to like parts.

Referring to the drawing in detail, 10 and 11 indicate opposed cylinders; 12 and 13, cup-shaped pistons in said cylinders; 14, a base for supporting said cylinders; 15, a rock-shaft journaled in said base; 16, a rock arm secured to, or preferably formed integral with, said'y arm and terminating at within the coupling 25.

its upper end in a spacer 17, which lies i between the adjacent facesa of the pistons 12 and 13v and maintains them a `proper distance apart for all positions of the mechanism. As shown, the base 14 andthe- Vlinders 10 and 11 are preferably formed in two castings which are adapted to beheld together by suitable bolts 13 and 19. Cylinder 10 is provided with an inlet port 20 and an exhaust, or outlet, port 21. Cylinder 11 is provided with similar ports 22 and 23. The two castings which make up the cylinders 10 and 11 and the base 14, when assembled. are provided with a threaded boss 24 for the engagement of a tubular coupling 25 which is threaded at its outer end for the reception of a supply pipe 2G. Extending from that portion of the boss 24 which is formed on one of the castings is a shank 27. A recess 28 is also formed in the opposing faces of the castings adiacent to the shank 27. A. reed 29 is secured at its outer end to the outer end of the shank 27 by a. plate 30 and screws 31 extending through the plate and the reed into the shank. The free end of the reed 29 extends into the recess 28. Ports 32 and 33 open out of the recess` and are positioned opposite to each other so that the free end of the reed 29 may alternately engage them and close them. The valve port 32 communicates with the cylinder inlet port 20 by passage 34; and the valve port 33 similarly communicates with inlet port 22 by a passage 35.

ln operation the fluid, which is prefer ably compressed air. is admitted through the supply pipe 26 into the chamber formed Normally, the reed t2,9 lies midway between the ports 32 and 3. shown. upon such admission of the actuating fluid,`a certain portion of it will iiow through passage 35 into cylinder 11and out through its exhaust port 23. At the same time air will flow through passage 24 into cylinder 10. This will produce unequal pressures cn opposite sides of the reed valve 28 and the latter will close port 33. The pressure of the fluid in cylinder 10 will cause piston 12 to press against spacer 17 and the latter will in turn press against piston v13 to force it to close its exhaust port 23 and to compress the entrapped air in cylinder 11 and passage 35. 'This action will cushion the piston 33 against the end With the pistons inthe position"- of the cylinder 11. This movement of these parts will rock the shaft 15 in one direction. As soon as piston 12 advances far enough to open its outlet port 21, the pressure in cylinder 10 and in passage 34 will be immediately reduced, and the reed 2.9 will close port 32 and immediately the actuating fluid will be admitted to cylinder 11 to drive the parts in the opposite direction. This will return the shaft 15 to the first position. This action will be constantly repeated and the pistons 1:2 and 18 reciprocated back and forth with the resulting oscillation of the rock-shaft 15. This shaft may be connected to any suitable mechanism to which it is desired to give a to-andfro movement, such as a sand-sitter or similar device.

In the modification illustrated in Fig. t, the pistons 19. and 13 are the same as the pistons 12 and 13 in Fig. 1, but the spacer 17, is formed integral with them instead of integral with the arm 16, as in F ig. 1. rlfhe arm 16 in this modification is bifurcated at its upper end so as to straddle the spacingshank 17/ to receive its proper oscillating movement upon the reciprocation of the pistons.

I have found in practice that when the pistons are made up in the form illustrated in Figs. 1, 2 and 53, with the spacer 17 separate from the pistons, the motor will start up upon the admission. of the actuating fluid through the supply pipe no matter what position the motor may have stopped in. I have found, on the other hand, that when the pistons are assembled as illustrated in Fig. 4,'the shaft 15 must be rocked so as to bring the arm 16 into one extreme position or the other before it is possible to start the motor. l am unable, at the present time, to explain this difference in operation, but have demonstrated it to be the fact.

In carrying out my invention it will be apparent that certain alterations and modiiications may be made in the details and arrangements of the parts withoutv departing from the spirit and scope of my invention. I, therefore, do not wish to be limited to the specific embodiments of my invention herein disclosed, but aim to cover all such alterations and modifications by the terms of the appended claims. And l Wish it understood that l may use steam or other fluids as well compressed air to operate my motor. `What l claim as new and desire to secure by Letters Patent of the United States is:

1. A. motor comprising two oppositely disposed cylinders, pistons in said cylinders, a spacer between said pistons, said spacer and cach of said pistons constituting structurally independent units operatively movable relative to one another, inlet ports at the outer ends of said cylinders, outlet ports inward of said inlet ports, control valve ports communicating with said inlet ports and positioned opposite each other, a reed rigidly secured at one point and operating at a free point upon said valve ports to alternately open and close them, said reed lying normally out of engagement with said ports, and a chamber inclosing said reed and having1 suitable iiuid supply connections.

9.. A motor comprising two oppositely disposed cylinders, pistons in said cylinders, a spacer between said pistons, said spacer and each of said pistons constituting structurally independent units operatively movable relative to one another, inlet ports at the outer ends of said cylinders, outlet ports inward of said inlet ports, control valve ports communicating with said inlet ports and positioned. opposite each other, a reed rigidly secured at one point and operating at a free point between said valve ports to alternately open and close them, said reed lying normally out of engagement with said ports, a chamber inclosing said reed and having suitable fluid supply connections, a frame for supporting said cylinders, a rock shaft journaled in said frame, and an arm secured at one point to said rock shaft and connected at another point to said spacer.

1n witness whereof, l hereunto subscribe my name this 23rd day of November', A. D., 1912.

THOMAS W KlNGS.

Witnesses:

l. E. Bruins, T. H. FERGUSON.

Copies of this patent may be obtained for five cents each, by adressing the Commissioner of Patents,

Washington, D. C. 

